61706191746090 has 32 divisors (see below), whose sum is σ = 152872113747456. Its totient is φ = 15924178514880.

The previous prime is 61706191746041. The next prime is 61706191746091. The reversal of 61706191746090 is 9064719160716.

61706191746090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61706191746090.

It is not an unprimeable number, because it can be changed into a prime (61706191746091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33175370977 + ... + 33175372836.

It is an arithmetic number, because the mean of its divisors is an integer number (4777253554608).

Almost surely, 2^{61706191746090} is an apocalyptic number.

61706191746090 is an abundant number, since it is smaller than the sum of its proper divisors (91165922001366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61706191746090 is a wasteful number, since it uses less digits than its factorization.

61706191746090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66350743854.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 61706191746090 in words is "sixty-one trillion, seven hundred six billion, one hundred ninety-one million, seven hundred forty-six thousand, ninety".